vacuum wiper problem

[59gmc]

I have just joined and i think i posted this thread on the wrong forum initially so hopefully this time i have got it right,
I have recently purchased a 59 gmc pickup which is in need of care and rebuilding,I have imported her from California to the UK and I am in need of some assistance and hope that someone is able to help.I do not yet have an owners manual and the previous owner has done part of many jobs but not completed many.
One of such is that it has vacuum wipers but with no pipes attached,having a changed engine with electic fuel pump put in at some point.The vacuum motor has two inlet/outlets ,one of which did have attached a small manifold for fitting other pipes.My only experience of vacuum systems comes from a 55 buick which i am sure only had one pipe feeding it from the engine.If any one could supply a diagram of the vacumm pump and where the pipes feed from and too I would be very much obliged.